Atomizer.



J. R. BALLENTINE.

ATOMIZER.

APPLICATION IILBD mum. 1910.

955,938, Patented Apr. 26, 1910.

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UNITE JOHNQR. BALLENTINE, 0F TOLEDO, OHIO.

ATOMIZER.

Specification of Letters Patent.

Patented Apr. 26, 1910.

Application filed January 27, 1910. Serial No. 540,438.

To all whom it may concern:

Be it known that I, J OI'IN It. BALLENTINE, citizen of the UnitedStates, residing at Toledo, in the county of Lucas and State of Ohio,have invented certain new and useful Improvements in Atomizers, of whichthe following is a specification.

This invention relates to atomizers, and especially to an improved sprayhead for delivering the spray or discharge from such instruments,embodying an improved construction or relation of the tubes with respectto each other and to the tip from which the spray is directlydischarged.

The invention is adapted for use with a vacuum atomizer, that is, one inwhich the liquid is taken up or caused to flow in consequence of thepassage of a current of air outwardly in proximity to the tip of theliquid tube, on the principle of an ejector, as distinguished from acompression atomizer wherein the liquid is caused to dis charge byreason of air pressure in the bottle or Vessel holding the liquid.

In the present invention the spray head is attached or fastened to theouter end of the air tube, and closes said end, and has a reduced boreinto which the contracted end of the liquid tube extends, with anannular space between the liquid tube and the air tube, said space beingunobstructed and permittin the free discharge of air through the sprayIiead. I am aware that a somewhat similar construction has been madewherein the spray head is screwed or otherwise fastened onto the end ofthe inner or liquid tube, with holes extending laterally through thewall of the spray head to admit air from the air tube to the spacewithin the head around the end of the liquid tube. In the presentconstruction the spray head is not fastened to the inner tube, but thereis a clear space extending entirely around the latter. This isadvantageous because it gives a freer communication and easier flow, andrequires less pressure on the bulb, and hence less air supply andpressure than with the heads having holes for the passage of air intothe spray head. There is less liability of clogging, and theconstruction is generally cheaper and more convenient, and requires nothreading of the bore of the spray head nor of the outside of the liquidtube.

The invention is illustrated in the accompanying drawings in which-Figure l is a longitudinal sectional view of the spray head and. part ofthe pipes leading thereto. Fig. 2 is a cross section on the line 2-2 ofFig. 1.

Referring specifically to the drawings, 6 indicates the outer or airtube and 7 the inner or liquid tube. In the form shown in Fig. 1 the airtube is otlset as indicated at S and the liquid tube is entered througha hole in the wall of the air tube at the oli'set portion, where it issoldered or brazed as indicated at 9, the tubes being thus firmlyfastened together. This offset is made comparatively near the sprayhead, whereby the inner tube is centered or held in proper axialposition, which is important, since it is essential to the properoperation of the atomizer that the tip of the inner tube should bespaced from the surrounding walls of the spray head. The hole throughthe outer tube, through which the liquid tube extends, is quite exactlypositioned for the purpose referred to.

The spray head proper is indicated at 10, and consists of a plug with abore therethrough, the bore being contracted at its outer end asindicated at 11. The body is threaded exteriorly as indicated at 12, andis screwed into the outer tube. Instead of a threaded connection a plaintight fit will answer the purpose. The shoulder 13 on the spray headabuts against the end of the air tube, and this shoulder is so locatedthat the spray head will occupy a proper relation to the end of theliquid tube. The end of the liquid tube within the spray head iscontracted as at 1 and projects slightly into the reduced bore 11, andthe end of the liquid tube is spaced on all sides from the wall of thespray head as shown, thereby forming an annular air passage around thetip of the liquid tube.

In operation, air forced through the air tube will flow out through thespray head and will draw liquid through the liquid tube and out at thetip thereof, the action being assisted by the inclined shoulder 15between the larger and smaller bores of the spray head, which directsthe air current toward and across the end of the liquid tube and therebycauses a mixture and atomization of the liquid, producing a veryefiicient spray which spreads as it escapes from the spray head. Asstated, the annular passage through the spray head around the nozzle ofthe liquid tube is free and unobstructed, the liquid tube being centeredin consequence of its brazed attachment to the air tube at the offset.

What I claim as new is:

1. In a vacuum atomizer, the combination of an outer tube having anoffset bend provided With an opening distant from its outer end, a sprayhead at the outer end of said tube having a longitudinal borecommunicating With said outer tube, and an inner tube extending at itsouter end into the bore of the spray head and spaced at all pointstherefrom, said inner tube fitted closely through the opening in theouter tube at a point distant from its end and closing said opening, theopening being in alinement with the'bore of the spray head to center theinner'tube therein.

2. In a vacuum atomizer, the combination of an outer tube having anoifset part With an opening therein, a spray head at the outer supportedby said outer tube at the opening, 7

to center the inner tube in the bore of the outer tube and the sprayhead, and forming a clear'annular space around the inner tube and in thespray head throughout the Whole length of the latter.

In testimony whereof, I aihX my signature in presence of tWo Witnesses.

JOHN R. BALLENTIN E.

Witnesses:

E G. VVHITZEL, WALTER O. KATZENMEYER.

